Joss JT1 (Prototype)

Or, there’s the off-chance it could be because you, like many of us, had hoped his dream of building a production supercar in Australia had come to fruition.

The Joss Developments JT1 is, alas, a car that has still not been able to roam the streets in packs, roaring a naturally aspirated, 6.8-litre V8 roar across the tarmac.

We encountered the Joss prototype in its early years, 2004 in fact, and then the word on power was 360kW and 650Nm – figures that’d keep us happy even today given its rough planned kerb weight of 800kg.

Bolwell Nagari (1970-1974)

A car that did become a reality, the Bolwell Nagari is still considered one of Australia’s great motoring achievements.

A 5.0-litre V8 (Windsor or Cleveland, depending on the year) and fibreglass body meant power-to-weight was an advantage, and the things reportedly hold together quite well even today.

Our friends at Unique Cars put one Dave Morley in the driver’s seat of one relatively recently, and Morley was pleasantly surprised.

“It’s kind of the Australian Corvette,” he said of it.

“You can see where they were going with it… it looks like a Le Mans racer from some angles.”

Once production ended due to tightening regulations and a low production scale, Bolwell’s car building fell away… until relatively recently.

In the mid-2000s a mix-and-match of car parts with a mid-mounted 3.5-litre Toyota V6 became the new Nagari. It was not as pretty, prolific, or as fondly remembered.

Elfin MS8 Streamliner (2005-???)

Beauty is in the eye of the beholder with… well, pretty much every other car on this list after this point, inclusive of the Elfin MS8. Sorry, Simcoe.

Giocattolo Group-B (1988-1990)

In the 1980s, IT entrepreneur Paul Halstead wanted to build a supercar. He was the owner of The Toy Shop, an exotic car importer in Sydney, but he wanted a car that was his.

So in 1988, off to Queensland it was, where he began work on production of the Giocattolo Group B.

Luckily, for Halstead at least, Alfa Romeo had recently failed to build a Group B car in time to see it compete, Group B had well and truly died by this point.

Imported Alfasud Sprints and Alfa’s 2.5-litre V6 provided the basis for the Giocattolo, which was apparently good for a little more than 220kW, with a kerb weight of just below 1100kg.

But the V6 proved difficult, so a 5.0-litre V8 from Walkinshaw (HSV) became the new powerplant.

"It wasn’t the most cost-effective way of doing things," Halstead reflects, "What was meant to be an affordable V6 sports car quickly became an expensive V8 one."

Around 15 were reportedly built, though where they all are is anyone’s guess.

Skelta G-Force S/C

ADR-compliant and registerable on the road, the Skelta G-Force S/C (supercharged) was built on a TIG-welded 25.4mm chrome-moly steel chassis with running gear nicked from a Honda S2000.

In that regard, 230kW is fine considering it only weighed 725kg. It was not so easy on the eyes, but that comes down to its aerodynamics.

In addition to that, it cost a dizzying $160,000. Dizzying given it was mostly unproven. And had no heater.

But we drove it in 2009 nonetheless, and actually quite enjoyed it. Shaun Cleary, our man on the ground back then, said the balance and grip was “phenomenal.”

But the man who built the car, Ray Vandersee, had one goal in mind.

“To win Targa Tasmania would give me a great deal of self-satisfaction,” he said.

“Really, the last guy to have tasted international success in his own car was Sir Jack Brabham. We’re certainly not claiming the same level of success, but Sir Jack’s definitely been an inspiration.”

Vandersee came close to it in 2010, when he piloted a 2009 model G-Force to second place in the modern category of Targa Tas, being bested only by the prodigious Jason White in a Lamborghini Gallardo Super Trofeo. They were one minute and three seconds ahead by the timing margin.

Redback Spyder

We were told it would have a top speed of 320km/h and hit 100km/h in about three seconds.

Then, in 2006, one was built. And then no more. The LS1-powered Redback Spyder, built by Nick Tomkinson and his business Carbontech, was destined to be stillborn given its outrageous looks and $320,000 price tag.

AJF1

The ‘Ferrari-killing’ AJF1 Fusion was meant to be Australia’s supercar. That doesn’t sound too different from the other meant-to-be members of this list, but behind this one was 1980 F1 champ Alan Jones.

“Just about every other bloody country has got its own supercar, and I thought there’s no reason why we can’t have a home-grown one,” he told MOTOR in 2011.

“I think a vehicle has to have four things: it has to have looks, performance, finish, and price. We believe now that we’re getting there.”

Unfortunately, even though it had performance from a ZR1 Corvette’s LS9, and a price – even if it was $300,000 – the AJF1 never took off.